The ad auction process takes place every single time someone enters a search query into Google. To be entered into the ad auction, advertisers identify keywords they want to bid on, and state how much they are willing to spend (per click) to have their ads appear alongside results relating to those keywords. If Google determines that the keywords you have bid on are contained within a user’s search query, your ads are entered into the ad auction.
When you’re trying to drive traffic to your website, it’s crucial that you get only relevant people to see your listing. Or else there’s no use getting a ton of visitors. When you’re doing SEO, you may or may not get the right people to visit your website. But it’s not the same with PPC ads. Your ads are laser targeted towards users who are actually searching for your product or service.
Even if you don’t have a website, you can still make sure customers can find you online by creating listings on sites like DexKnows and Yelp. Just be aware that your customer base will be relying more and more on the internet to learn about your company, and a website will better provide the information they seek, as well as helping you build their confidence in your business.